精品-单片机的温湿度控制仪的设计.pdf

基于单片机的温湿度控制仪的设计 摘要：本设计实现的是单片机温湿度测量与控制系统，通过 LCD 显示所测量的 温湿度。系统采用集温湿度传感器与A/D 转换器为一体的SHT11 芯片，通过单 片机处理进行显示，其它模块包括了实时时钟/ 日期产生电路和超限报警处理电 路，对所测量的值进行实时显示和报警处理。本文介绍了基于 ATMEL 公司的 AT89C51 系列单片机的温湿度实时测量与控制系统和显示系统的设计，包括介 绍了硬件结构原理，并分析了相应的软件的设计及其要点，包括软件设计流程及 其程序实现。系统结构简单、实用，提高了测量精度和效率。 关键词：单片机、SHT11、LCD、DS1302、温湿度控制； i The Design of Temperature and Humidity Control Instrument which is based on MCU Abstract: The design and implementation of measurement and control temperature and humidity is MCU system, through which the temperature and humidity measurement LCD. System adopts set temperature and humidity sensor and A/D converter for SHT11 chip microcontroller processing, through that other modules including real-time clock/date produce circuit and the off-gauge alarm circuit, the value of measurement for real-time display and alarm. The paper introduces the ATMEL company based on AT89C51 single-chip series of temperature and humidity measurement and control system and real -time display system design, including the hardware structure and principle, and the corresponding so ftware design, including the design of the software and its key process and procedure. System structure is simple, practical, and improve the measuring precision and efficiency. Key words: MCU, SHT11, LCD, DS1302, temperature and humidity control ii 目 录 引言1 1.整体设计2 2.仿真软件介绍3 2.1 Proteus 简介3 2.2 KEIL C51 编译器简介4 3.硬件设计部分6 3.1 芯片介绍6 3.1.1 单片机—AT89C51 6 3.1.2 LCD 显示-